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Net-Security.org: Securing a default Linux installation

"This article is written for a linux newbie or anybody who
cares, at least a bit about the data stored on his hard drive.
You'll notice that it's aimed mainly for home-users, not for large
network administration or similar."

"You might wonder why would anybody want to access your data?
Well, how's this counterquestion for an answer: why not? You see, a
lot of people out there (on the great internet plane of existence)
like to mess around with other people's data. A lot of things could
be said here, but as we only have some 43 years of life before the
notorious Y2043K bug, we'll skip it for the sake of the
article..."

"So, you got yourself this wonderful linux distribution, and the
world is your oyster now, nowbody can mess with it...eeee!!! Wrong!
Fact #1: running linux as an OS of your choice is as insecure as
any other OS, as long as you don't maintain it properly! In
fact, running linux should make you even more insecure than while
running other OS's, especially if you are a total newbie who
installed linux yesterday."